Ensure your BMW N55 engine operates at peak performance with this high-quality coolant thermostat assembly, designed for BMW F-Series models. This Frey aftermarket thermostat (OEM part numbers 11537598865 and 11532394968) provides a perfect fit and reliable performance, matching the specifications of BMW's original thermostat parts. It is an ideal solution for BMW owners experiencing engine overheating, coolant leaks, or temperature fluctuations.

Whether you're facing symptoms like a Check Engine Light or poor cabin heating, replacing your thermostat with this Frey replacement thermostat will restore your BMW’s cooling system to its optimal working condition.

Key Features:

• OEM Part Numbers: 11537598865, 11532394968
• Engine Compatibility: BMW N55 3.0L Turbocharged I6
• Vehicle Fitment: BMW 1 Series (F20/F21), 2 Series (F22/F23), 3 Series (F30/F31), 4 Series (F32/F33), X5 (F15), X6 (F16)
• Brand: Frey (Aftermarket)
• Construction: Durable high-temp plastic housing and robust seals
• Function: Regulates coolant flow for optimal engine temperature and prevents overheating

Compatible BMW Models (N55 Engine, F-Series):

• BMW 1 Series (F20/F21): 135i, M135i (2011–2016)
• BMW 2 Series (F22/F23/F87): M235i, M235i xDrive, M2 (F87, 2016–2018)
• BMW 3 Series (F30/F31/F34): 335i, 335i xDrive, 335i GT
• BMW 4 Series (F32/F33/F36): 435i, 435i xDrive
• BMW 5 Series (F10): 535i
• BMW X5 (F15): xDrive35i
• BMW X6 (F16): xDrive35i

Symptoms of a Failing BMW Thermostat:

The BMW N55 thermostat is a crucial component of your vehicle's cooling system. When it fails, it can lead to several issues:

• Engine overheating: A thermostat stuck closed will prevent proper coolant flow, leading to engine overheating.
• Engine running cold: A thermostat stuck open can prevent the engine from reaching its optimal operating temperature, reducing fuel efficiency and engine performance.
• Coolant leaks: Degraded seals or cracks in the thermostat housing can lead to coolant leaks.
• Fluctuating temperature readings: Erratic temperature gauge readings or illuminated Check Engine Light (CEL) due to thermostat failure.
• Poor cabin heating: A faulty thermostat can impact the heating system, causing poor cabin warmth during colder months.

Replacing your thermostat proactively can avoid costly repairs, ensuring your BMW F-Series N55 engine remains efficient and protected.

Why Choose Frey Aftermarket Thermostat?

• OEM-Equivalent Fitment: Matches the specifications of original BMW thermostats for F-Series vehicles.
• Durable Construction: Made from heat-resistant materials to withstand high temperatures and prevent coolant leaks.
• Cost-Effective Solution: Provides OEM-quality performance at a more affordable price compared to genuine BMW parts.
• Easy Installation: The Frey thermostat assembly is designed to be a direct-fit replacement, saving you time and labor costs.

How a BMW Thermostat Works:

The BMW N55 engine thermostat regulates the temperature of the engine by controlling the flow of coolant between the engine and the radiator. It opens to allow coolant to flow when the engine temperature rises, and closes when the engine is cool to ensure quick warming. A properly functioning thermostat ensures optimal engine temperature, improved fuel efficiency, and reliable performance.

Installation Tips:

• Direct fitment – no modifications required.
• Includes housing and seal for a complete installation.
• Be sure to bleed air from the cooling system to avoid overheating.
• Always use BMW-approved coolant (G48) to maintain system integrity.
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Tools Required: Torque wrench, hose clamp pliers, coolant catch pan

Order Your BMW Thermostat Assembly Today!

If you're dealing with overheating, poor fuel efficiency, or temperature issues, replacing the BMW N55 thermostat is a smart choice for preventing costly engine damage. Trust Frey aftermarket parts for the same high quality and performance as the original thermostat, at a fraction of the price.

Need help confirming fitment?

Contact us with your BMW model and year, and we’ll guide you to the perfect replacement part for your vehicle.

Tags:

• Thermostat replacement for BMW 335i
• BMW F30 N55 thermostat repair
• Aftermarket Frey thermostat
• BMW coolant system parts
• BMW engine temperature regulation
• Frey thermostat assembly for BMW
• BMW F-Series engine cooling